The Boomerang Athens House by Vassilis Siafaricas is a highly esteemed winner of the very prestigious 2025 A' Design Award in Architecture, Building and Structure Design Competition Category.
IronArchitecture· 2025
The Boomerang Athens House
Client: Ecléde
A' Design Award Winner in Architecture Category
Verified Award Winner
Verify Award Status for #171200The Design
About The Boomerang Athens House
The Boomerang Athens is a residence in Athens, Greece, spanning 425 square meters across four levels. The building is the renovation of an existing structure, upgraded for net-zero energy performance. High-performance insulation, triple-glazed thermally broken aluminium windows and underfloor heating reduce the energy demand. A KNX automation network controls heating, cooling, lighting and security. Photovoltaic-integrated pergolas and low-emission finishes support sustainability. A rooftop pool and large windows link the interior with outdoor areas.
The Recognition
About the A' Design Award
The Boomerang Athens House is an Iron A' Design Award winner, a prestigious recognition granted to good designs that meet the professional and industrial requirements expected from well-designed creations. Iron winners demonstrate great skill, high specialization, expert understanding, and creative capacity of their creators. The Boomerang Athens House is expected to be a highly regarded, admired, and cherished creation that is practical and innovative. This Iron A' Design Award-winning design integrates industry best practices and has competent technical characteristics linked with know-how and talent. The Boomerang Athens House is respected for its thoroughness and is designed to provide quality of life improvements that help make the world a better place.
Where to Get It
Sustainable Luxury Architecture and Development
We design and develop LEED-certified luxury residences that seamlessly blend environmental responsibility with contemporary elegance. Our expertise in net-zero energy buildings, smart home integration, and biophilic design creates homes that minimize environmental impact while maximizing comfort and sophistication.
Request ProposalInterviews
Grand Interview
Your innovative approach to transforming The Boomerang Athens House into a LEED Gold-certified residence while maintaining its luxury status is remarkable - could you elaborate on how you balanced these seemingly contrasting objectives?
Firstly I would like to first announce to you that the residence is certified as LEED Platinum. One pf the few in whole Europe. We treated “luxury” and “low-impact” as the same brief: precision, comfort, and longevity. The design pairs tactile, high-end finishes with invisible performance—airtightness, thermal-bridge control, and smart shading—so clients feel effortless comfort rather than “eco-compromise.” We modeled every envelope change to cut loads first, then right-sized systems for silence and stability. The result is quiet, clean air, steady temperatures, and beautifully lit spaces, luxury experienced as health and calm, while the documentation, metering, and commissioning deliver the LEED rigor.
The Boomerang Athens House showcases cutting-edge smart home technology integration - what inspired your specific choices in automation systems, and how do they contribute to both sustainability and resident comfort?
We chose an open, interoperable backbone (e.g., KNX/BACnet at the core with Matter-ready endpoints) to avoid lock-in and let sustainability “drive itself.” CO₂, VOC, and occupancy sensors modulate ventilation and setpoints, sub-metering exposes real use so residents see cause-and-effect. The inspiration was hotel-grade comfort with lab-grade data: automation that anticipates rather than nags, trims peaks, and preserves serenity.
The biophilic design elements of The Boomerang Athens House create a unique dialogue between urban living and nature - could you share your vision behind this integration and its impact on occupant wellbeing?
Athens’ light and scent palette guided us: Mediterranean species (olive, rosemary, lavender) for seasonal cues; a small green wall and deep planters irrigated by treated greywater; mineral plasters and warm woods inside. Daylight targets (sDA/ASE) informed apertures and finishes, while operable windows, views, and micro-gardens create micro-rituals—open a leaf-screen, catch the meltemi, breathe the herbs. The payoff is measurable (air quality, circadian lighting) and felt (lower stress, stronger place attachment).
Behind the Design
Press Kit
Credits, team members and technical details provided by the designer.
- Unique Properties
- This design is a Leed Gold to-be-certified, net-zero energy luxury residence that seamlessly integrates sustainability, smart technology, and contemporary aesthetics. Unlike conventional developments, it prioritizes energy efficiency, advanced automation, and biophilic design, ensuring minimal environmental impact without compromising elegance. Its smart home systems, innovative ventilation, and high-performance materials set a new benchmark for sustainable high-end real estate.
- Dimensions & Packaging
- The residence spans 425 sqm across four levels. Ceiling heights range from 2,800 mm to 3,200 mm, optimizing natural light and ventilation. Triple-glazed, thermally insulated aluminum windows enhance energy efficiency. Underfloor heating by Rehau, a vrv air-conditioning system by LG, and a knx automation network regulate indoor climate. The rooftop pool integrates a high-efficiency heat pump with dimensions 8 m x 3 mmm x 1,5 m.
- Tags
- Leed certified, Leed gold, smart home technology, sustainable architecture, luxury real estate, urban regeneration, biophilic design, energy-efficient materials, KNX automation, Double Regeneration Metropolitan Park, Athens luxury houses
- Production Technology
- The Boomerang design was developed using parametric modeling, energy simulations, and LEED-certified methodologies to achieve optimal efficiency. The structure was reinforced with high-performance insulation, thermally broken aluminum windows, and Rehau underfloor heating for passive energy savings. knx automation controls HVAC, lighting, and security, ensuring seamless operation. Sustainable materials, including low-voc finishes and photovoltaic-integrated pergolas, enhance both performance and aesthetics.
- Design Challenge
- The biggest challenge was balancing luxury with sustainability while retrofitting an existing structure. The historical challenge lay in preserving architectural integrity while modernizing the design. Socially, creating an eco-friendly yet high-end home required shifting perceptions of luxury. Externally, strict LEED regulations, energy laws, and material limitations demanded innovative solutions. Overcoming structural constraints and integrating smart, efficient systems was a key breakthrough.
- Research
- This applied research transforms an existing property into a Leed Gold-certified smart home with net-zero energy. Using structural audits, energy tests, and Leed guidelines, a team of architects and engineers optimized insulation, smart systems, and ventilation. Results showed enhanced efficiency, luxury, and sustainability. The project sets a new standard for eco-friendly real estate, proving that design, business, and sustainability can coexist seamlessly.
- Inspiration
- The Boomerang was inspired by the desire to harmonize sustainability with contemporary luxury while redefining urban living standards. It was motivated by the challenge of transforming an existing structure into an environmentally responsible, energy-efficient, and technologically advanced residence. Drawing from LEED principles, modern architectural trends, and the natural landscape, the design sought to create a seamless dialogue between innovation, functionality, and aesthetics.
- Project Duration
- The project began in Athens in late 2023 and will be completed in May 2025 as Greece’s first Leed Gold certified residence. It integrates net zero energy solutions, smart technologies, and structural reinforcements. Adjacent to the future Double Regeneration Metropolitan Park, it offers unobstructed views, urban cooling, and green access. This benchmark in luxury sustainable architecture enhances air quality, biodiversity, and the connection between urban living and nature.
- Operation Flow
- The Boomerang Athens is designed for effortless, smart living. The home adapts to its residents, adjusting lighting, temperature, and energy use automatically for maximum comfort and efficiency. Large windows flood the space with natural light while insulating against heat and cold. The rooftop pool and outdoor spaces create a seamless indoor-outdoor experience. With sustainable materials and energy-saving technology, it offers luxury with a conscience, reducing environmental impact without compromising comfort.
- Team Members
- Designer: Vassilis Siafaricas
Developer: Vassilis Siafaricas
Mechanical Engineer: Vasilis Mastrogiannis - Image Credits
- Image #1: Photographer / Illustrator / Creator Kyriakos Trikaliotis, Ownership of ECLÉDE.
Image #2: Photographer / Illustrator / Creator Kyriakos Trikaliotis, Ownership of ECLÉDE.
Image #3: Photographer / Illustrator / Creator Kyriakos Trikaliotis, Ownership of ECLÉDE.
Image #4: Photographer / Illustrator / Creator Kyriakos Trikaliotis, Ownership of ECLÉDE.
Image #5: Photographer / Illustrator / Creator Kyriakos Trikaliotis, Ownership of ECLÉDE.
Video Credits: Video by ANGEL BLEND.
Sponsored
Explore Beyond Designers.org
Discover products, services and opportunities from our advertising partners.
More to Explore
Related Designs
Explore more award-winning designs from the same category, selected by merit.